/*
 * Copyright (C) 2009 Leandro Aparecido <lehphyro@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.metalframework.persistence.repository;

import static org.metalframework.persistence.util.QueryUtils.*;

public class QueryParameter {

	private String name;
	private Object value;
	private String prefix;
	private String suffix;

	public QueryParameter(String name, Object value) {
		this(name, value, false);
	}

	public QueryParameter(String name, Object value, boolean forLike) {
		this(name, value, forLike ? LIKE_ANY_TOKEN : null, forLike ? LIKE_ANY_TOKEN : null);
	}
	
	public QueryParameter(String name, Object value, String prefix, String suffix) {
		this.name = name;
		this.value = value;
		this.prefix = prefix;
		this.suffix = suffix;
	}
	
	public Object getActualValue() {
		Object actualValue;
		
		if (value != null && (prefix != null || suffix != null)) {
			StringBuilder sb = new StringBuilder();
			
			if (prefix != null) {
				sb.append(prefix);
			}
			
			sb.append(escape(value.toString()));
			
			if (suffix != null) {
				sb.append(suffix);
			}
			
			actualValue = sb.toString();
		} else {
			actualValue = value;
		}
		
		return actualValue;
	}
	
	public String getName() {
		return name;
	}

	public Object getValue() {
		return value;
	}

	public String getPrefix() {
		return prefix;
	}

	public String getSuffix() {
		return suffix;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((name == null) ? 0 : name.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		QueryParameter other = (QueryParameter) obj;
		if (name == null) {
			if (other.name != null) {
				return false;
			}
		} else if (!name.equals(other.name)) {
			return false;
		}
		return true;
	}

	@Override
	public String toString() {
		return String.valueOf(getActualValue());
	}
}
